Waterproofing Work

For all private and corporate buildings, we offer accurate diagnosis that eliminates the anxiety caused by rainwater intrusion.
In recent years, the number of inquiries regarding rain water leaks has increased due to the longer life span of buildings. Uchigen can help extend the useful life of your building with a wide range of construction experience, from private housing to corporate offices, and a wealth of paint knowledge as a paint trading company.

By the time you notice a rain water leak, it's already too late!? Importance of Periodic Inspections & Maintenance

For buildings, rain water leaks are a fatal risk. Unless a roof is broken by a typhoon or the like, most early rain water leaks are caused by deterioration of waterproofing or sealing materials. At this stage, properly maintaining and resealing the waterproof material can help prevent damage to the underlying roof and wall material. However, if rain water leaks are left unattended, problems caused by moisture such as mold, corrosion, and termites will progress on these underlying materials, forcing large-scale repair work such as replacing the roof, replacing the exterior wall material, interior material, and base material. Therefore, inspection and construction before the water-resistance function is lost is the best way to maintain the building at low cost. Please contact us if you have any concerns.

We propose optimal waterproofing work according to on-site conditions and budget

Uchigen conducts various waterproofing work for a wide range of customers, such as private housing, multi-unit housing, corporate offices, etc. We propose and construct appropriate waterproofing work with consideration for your current waterproofing and sealing materials, rain water leaks and other water leaks, budget, etc.

Main Construction Targets

  • Private housing: rooftops, verandas/balconies, etc.
  • Multi-unit housing: rooftops, verandas/balconies, common area roofs, etc.
  • Corporations: Offices, factory roofs, etc.

Main Waterproofing Methods

FRP waterproofing

A waterproof paint film made by combining unsaturated polyester resin with reinforcing materials such as glass fiber.
Characteristics
  • It is seamless
  • Lightweight, load-bearing, handles heavy walking
  • Fast curing, 1 PLY can be installed in a single day for small areas
  • It is hard, so it is not suitable for large areas or moving bases
Main Waterproofing Methods
If the existing material is FRP, we recommend polishing and the 1 PLY construction method. If there is a defect or a new installation, use 2 PLY

Urethane paint film waterproofing

Paint film waterproofing made by applying liquid urethane resin (two-component or one-component type) with a metal trowel
Characteristics
  • It is seamless
  • Flexible and effective on moving bases
  • Even small areas take at least 3 days
  • We can also use adhesion and insulation methods
Main Waterproofing Methods
We recommend the type that combines high elongation and high strength. Proflon Eco HG and Evercoat Zero-1H

PVC sheet waterproof

Sheet waterproofing is formed by fixing a polyvinyl chloride resin sheet with adhesive or steel plates and fusing the joints together
Characteristics
  • The construction period is often shorter than that of urethane waterproofing
  • We can use the insulation and adhesion methods
  • It looks better than the paint film waterproofing
  • Workability is poor in the case of complex shapes
Main Waterproofing Methods
We recommend the mechanically fixed pre-cast UD method (insulation method), which is less susceptible to effects from the base and requires minimal base preparation.

Polymer cement-based paint film waterproofing

A simple waterproofing material that solidifies with water, made from a mixture of emulsion resin and cement powder.
Characteristics
  • It is low cost and offers short construction time, ideal for temporary waterproofing when removing existing waterproofing layers.
  • It is suitable for simple waterproofing of small eaves and roof coping, and can also be coated with paint.
  • Environmentally friendly because it is water-based
  • Low durability and conformability, so it is not suitable for walking on
Main Waterproofing Methods
Recommended for simple waterproofing such as small eaves and roof coping, such as Proflon Aqua and Big Sun.

Supported areas

対応エリアマップ
  • Kanto region (excluding some areas)
  • Shizuoka Prefecture (except southern Izu)
  • Aichi Prefecture
  • Mie Prefecture (except Higashi-Kishu)
  • Gifu Prefecture (Southern part)
*Please contact us about service in other areas.

Uchigen's 2 Strengths

01
STRONG POINT

Our knowledgeable and experienced experts apply everything from base treatment to the topcoat.

Uchigen's Painting Work Division is an expert in paints and painting technology. We have many personnel with various qualifications, including first and second class construction management engineers, and they have extensive construction experience in facilities such as factories. Our unique strength is that our network as a paint trading company allows us to offer a wide variety of high-quality products at reasonable prices.
02
STRONG POINT

We work with a wide range of waterproofing specifications for a wide range of buildings, from private and multi-unit housing to industrial buildings.

There are many different types of sealants used for waterproofing roofs and verandas, window frames, tile joints, selected depending on where they are used and when they were installed. Uchigen uses its experience in many work sites and its extensive knowledge of materials to respond to any site with the best materials and construction methods.

Frequently Asked Questions

I am considering waterproofing. What should I do in order to get a cost estimate?

First of all, give us a call or send an email. The process will be smooth if you tell us, "I would like a cost estimate for construction work (painting and waterproofing)." Our sales team will be happy to assist you. No outside parties will be involved. We offer estimates and diagnoses free of charge.

When repainting my house, should I also repaint my verandas?

If the exterior wall needs to be repainted, the waterproofing of the veranda is often degraded as well. First, it is necessary to check the condition and determine what type of specifications are best for construction. However, in the case of waterproofing, the treatment of "repainting beautifully" is often not enough. Let us give you advice from an expert perspective.

Can you do the waterproofing work on the veranda alone?

Yes we can. If you have a normal two story house, we can climb up to the veranda using a ladder, so it is possible to do construction only on your verandas. In some cases, we may need to set up a scaffold, so please contact us. If there is no urgent situation such as a rain water leak, we can reduce the extra cost by doing work together when repainting your exterior walls.

There is a rain water leak in our office. I think the roof is broken. Can you take a look?

Please consult with us first. If a rain water leak has already occurred, you will need a solid diagnosis of where the rain water is coming from, but it is often difficult to reliably identify the cause of the leak. Therefore, we will have a thorough discussion about what should be done in each possible location, how much construction should be done, and so on.

Do you offer a warranty?

We provide our own warranty. However, depending on the conditions there are cases where we cannot provide a warranty, and it is necessary to verify that the leak is coming from the area where the work was done, so we may have to deal with each case on an individual basis. Please contact us for more information.

How many days does the construction process take?

Construction details and construction scope will vary, so we will provide an estimate after checking the status on-site. If it is something like a veranda on a house, we have specifications that can be completed in one day.

If there are no rain water leaks at present, do you need to do construction work?

If there is already a rain water leak, it is too late. Even if the degradation of existing waterproofing is not directly linked to rain water leaks, it is possible that the building itself has been damaged. Once visible deterioration occurs, such as rain water leaks, peeling of the exterior wall paint film, swelling, and corrosion of the siding boards and base, it will cost more to fix. If you have any concerns about waterproofing or aging deterioration, please feel free to consult with us.

CONTACT Inquiries about
Painting Work

If you have any questions or concerns, please feel free to contact us with the following information.

CONTACT